I got the "N" from the CADI. But his death certificate says her name was Katheryn Rapp. His cause of death was Diabetic Coma and his last place of residence was 982 Emerson St., Pasadena.
William Henry Rapp was born September 25, 1884 in Dobbs Ferry, Westchester County, New York and died January 10, 1935 at 982 Emerson St., Pasadena, Los Angeles County, California.
He moved from Westchester County with his wife, Sarah "Sadie" A. Best sometime between 1910 and 1920. Sarah died February 23, 1926 at White Memorial Hospital, Los Angeles, Los Angeles County, California, afterwhich, William married fairly quickly.
I do not know of any children he had with Sadie. Though Sadie was married before William, so he may have been married before he was married to Sadie.
William's parents were Frederick Rapp & Margaret E. Marnett, both born in Germany.